Frozen Chocolate-Peanut Butter Pie

INGREDIENTS

• :
• 1¾ cups chocolate cookie crumbs (about 20 Oreos)
• 3 tablespoons dark brown sugar
• 6 tablespoons unsalted butter, melted
• Pinch of salt
• 6 ounces cream cheese, at room temperature
• ¾ cup powdered sugar
• 1 teaspoon kosher salt
• 1¼ cups creamy peanut butter (not chunky or natural)
• 1 tablespoon vanilla extract
• 2 cups heavy cream
• 1 ounce semisweet chocolate, finely chopped
• 2 tablespoons peanut butter